tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' watchdog: BUG: soft lockup - CPU#0 stuck for 24s! [syz-executor.0:13570] Modules linked in: irq event stamp: 8955411 hardirqs last enabled at (8955410): [] irqentry_exit+0x1bf/0x760 hardirqs last disabled at (8955411): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (8954992): [] __irq_exit_rcu+0x137/0x1c0 softirqs last disabled at (8954995): [] __irq_exit_rcu+0x137/0x1c0 CPU: 0 UID: 0 PID: 13570 Comm: syz-executor.0 Not tainted 7.1.0-rc6-next-20260603 #1 PREEMPT(lazy) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__rcu_read_unlock+0xc6/0x5c0 Code: b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e d1 01 00 00 8b 85 80 04 00 00 85 c0 75 57 <65> 48 8b 1d da ce 9b 06 48 8d bb 7c 04 00 00 48 b8 00 00 00 00 00 RSP: 0018:ffff88806cc088b0 EFLAGS: 00000206 RAX: 000000000088a606 RBX: ffff88806cc38a80 RCX: 0000000000000008 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff815e72c8 RBP: ffffffff86233700 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff86aa6097 R11: 0000000000000003 R12: ffff888052275580 R13: 0000000000000000 R14: 0000000000000200 R15: 0000000000000000 FS: 00007fd39735e700(0000) GS:ffff8880e4c7c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055556c551c58 CR3: 0000000052a7a000 CR4: 0000000000350ef0 Call Trace: __is_insn_slot_addr+0x140/0x290 kernel_text_address+0x5b/0xc0 __kernel_text_address+0xd/0x40 unwind_get_return_address+0x59/0xa0 arch_stack_walk+0x9c/0xf0 stack_trace_save+0x8e/0xc0 kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 kasan_save_free_info+0x3a/0x60 __kasan_mempool_poison_object+0x115/0x190 napi_skb_cache_put+0x2b/0x5f0 napi_consume_skb+0x19c/0x350 skb_defer_free_flush+0x1c3/0x230 net_rx_action+0x346/0xdb0 handle_softirqs+0x1b1/0x8e0 __irq_exit_rcu+0x137/0x1c0 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x70/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:unwind_next_frame+0x40/0x2790 Code: 41 56 48 c1 ea 03 41 55 41 54 55 53 48 83 ec 38 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 33 0b 00 00 41 8b 1f 45 31 e4 85 db 75 16 <48> 83 c4 38 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f e9 6a 26 b7 03 RSP: 0018:ffff888053a86f90 EFLAGS: 00000293 RAX: 0000000000000000 RBX: ffff888053a87478 RCX: 0000000000000080 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880522759fc RBP: ffff888053a80000 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff86aa6097 R11: 0000000000007f6a R12: ffff888053a87001 R13: ffff888053a87048 R14: ffff888053a87448 R15: ffff888053a87000 arch_stack_walk+0x86/0xf0 stack_trace_save+0x8e/0xc0 kasan_save_stack+0x24/0x50 kasan_record_aux_stack+0x89/0xa0 __call_rcu_common.constprop.0+0x70/0x9d0 free_percpu+0x30/0x1330 __mmdrop+0xd2/0x450 finish_task_switch.isra.0+0x6ce/0x9c0 __schedule+0x125e/0x4e10 preempt_schedule_irq+0x4e/0x90 irqentry_exit+0x205/0x760 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:_raw_spin_unlock_irqrestore+0x34/0x50 Code: c7 18 53 48 89 f3 48 8b 74 24 10 e8 f6 1c 67 fc 48 89 ef e8 be 6d 67 fc 80 e7 02 74 06 e8 34 38 93 fc fb 65 ff 0d 5c 26 0d 03 <74> 07 5b 5d e9 e3 23 00 00 e8 de 7e 33 fc 5b 5d e9 d7 23 00 00 0f RSP: 0018:ffff888053a876f8 EFLAGS: 00000286 RAX: 000000000032aa4b RBX: 0000000000000256 RCX: 0000000000000080 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff84ed19cc RBP: ffff888009c5c780 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff86aa6097 R11: 0000000000000000 R12: 0000000000000000 R13: ffff888053a87748 R14: ffff88801004a000 R15: ffff88801004a000 qlist_free_all+0x50/0x130 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x1ee/0x650 __alloc_object+0x2b/0x2c0 __create_object+0x1d/0x80 kmem_cache_alloc_noprof+0x4db/0x650 vm_area_dup+0x25/0x700 dup_mmap+0x6ff/0x1f40 copy_process+0x3dd6/0x7940 kernel_clone+0x1fd/0x870 __do_sys_fork+0x94/0xd0 do_syscall_64+0x113/0x6a0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd399de8b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd39735e188 EFLAGS: 00000246 ORIG_RAX: 0000000000000039 RAX: ffffffffffffffda RBX: 00007fd399efbf60 RCX: 00007fd399de8b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fd399e42f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdbc6bb69f R14: 00007fd39735e300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 7.1.0-rc6-next-20260603 #1 PREEMPT(lazy) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:pv_native_safe_halt+0x1e/0x30 Code: 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 0f 1f 44 00 00 eb 0c 0f 1f 44 00 00 0f 00 2d 49 72 1b 00 0f 1f 44 00 00 fb f4 1d ed 02 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 RSP: 0018:ffff88800a76fe68 EFLAGS: 00000206 RAX: 000000000024df33 RBX: ffff88800a730000 RCX: ffffffff84ea67a7 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff814e3f70 RBP: ffffed10014e6000 R08: 0000000000000001 R09: ffffed100d9a641a R10: ffff88806cd320d3 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880e4d7c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1423c4c5e0 CR3: 000000000b44f000 CR4: 0000000000350ef0 Call Trace: default_idle+0xe/0x20 default_idle_call+0x6c/0xb0 do_idle+0x3a0/0x590 cpu_startup_entry+0x4f/0x60 start_secondary+0x1bd/0x210 common_startup_64+0x13e/0x158 ---------------- Code disassembly (best guess): 0: b8 00 00 00 00 mov $0x0,%eax 5: 00 fc add %bh,%ah 7: ff (bad) 8: df 48 89 fisttps -0x77(%rax) b: fa cli c: 48 c1 ea 03 shr $0x3,%rdx 10: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax 14: 84 c0 test %al,%al 16: 74 08 je 0x20 18: 3c 03 cmp $0x3,%al 1a: 0f 8e d1 01 00 00 jle 0x1f1 20: 8b 85 80 04 00 00 mov 0x480(%rbp),%eax 26: 85 c0 test %eax,%eax 28: 75 57 jne 0x81 * 2a: 65 48 8b 1d da ce 9b mov %gs:0x69bceda(%rip),%rbx # 0x69bcf0c <-- trapping instruction 31: 06 32: 48 8d bb 7c 04 00 00 lea 0x47c(%rbx),%rdi 39: 48 rex.W 3a: b8 00 00 00 00 mov $0x0,%eax